Structural characteristics of peptides extracted from Cantonese sausage during drying and their antioxidant activities

2009 ◽  
Vol 10 (4) ◽  
pp. 558-563 ◽  
Author(s):  
Weizheng Sun ◽  
Haifeng Zhao ◽  
Qiangzhong Zhao ◽  
Mouming Zhao ◽  
Bao Yang ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Structural Characteristics

scholarly journals Optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xuemei Ma ◽  
Jiayi Yu ◽  
Jing Jing ◽  
Qian Zhao ◽  
Liyong Ren ◽  
...  
Keyword(s):  
High Performance ◽  
Freeze Drying ◽  
Antioxidant Activities ◽  
Structural Characteristics ◽  
Radical Scavenging ◽  
Ammonium Oxalate ◽  
Extraction Process ◽  
Size Exclusion ◽  
Pharmaceutical Industries

AbstractPectin is a kind of natural and complex carbohydrates which is extensively used in food, chemical, cosmetic, and pharmaceutical industries. Fresh sunflower (Helianthus annuus L.) heads were utilized as a novel source of pectin extracted by ammonium oxalate. The conditions of the extraction process were optimized implementing the response surface methodology. Under optimal extraction parameters (extraction time 1.34 h, liquid–solid ratio 15:1 mL/g, ammonium oxalate concentration 0.76% (w/v)), the maximum experimental yield was 7.36%. The effect of spray-drying and freeze-drying on the physiochemical properties, structural characteristics, and antioxidant activities was investigated by FT-IR spectroscopy, high performance size exclusion chromatography, and X-ray diffraction. The results showed freeze-drying lead to decrease in galacturonic acid (GalA) content (76.2%), molecular weight (Mw 316 kDa), and crystallinity. The antioxidant activities of pectin were investigated utilizing the in-vitro DPPH and ABTS radical-scavenging systems. This study provided a novel and efficient extraction method of sunflower pectin, and confirmed that different drying processes had an effect on the structure and properties of pectin.

Structural Characteristics and Antioxidant Activities of Oligosaccharides from Longan Fruit Pericarp

2009 ◽  
Vol 57 (19) ◽  
pp. 9293-9298 ◽  
Author(s):  
Guoxiang Jiang ◽  
Yueming Jiang ◽  
Bao Yang ◽  
Chunyan Yu ◽  
Rong Tsao ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Structural Characteristics ◽  
Fruit Pericarp

Structural characteristics and antioxidant activities of polysaccharides from longan seed

2013 ◽  
Vol 92 (1) ◽  
pp. 758-764 ◽  
Author(s):  
Guoxiang Jiang ◽  
Lingrong Wen ◽  
Feng Chen ◽  
Fuwang Wu ◽  
Sen Lin ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Structural Characteristics ◽  
Longan Seed

scholarly journals Medicinal properties of jojoba (Simmondsia chinensis)

2021 ◽  
pp. 1-10
Author(s):  
Zipora Tietel ◽  
Shirin Kahremany ◽  
Guy Cohen ◽  
Navit Ogen-Shtern
Keyword(s):  
Antioxidant Activities ◽  
Structural Characteristics ◽  
Simmondsia Chinensis ◽  
Agricultural Crop ◽  
Plant Materials ◽  
Research Areas ◽  
Health Promoting ◽  
Medicinal Properties ◽  
Cosmetic Formulation ◽  
Natural Wax

Abstract Jojoba, Simmondsia chinensis (Link) C.K. Schneider is an evergreen shrub widely grown in Israel, the Middle East, South America, Africa, India and Australia used as an agricultural crop for commercial purposes and as a source of its non-edible natural wax. It is widely used in pharmaceutics and cosmetic formulation due to its unique structural characteristics and beneficial health effects. In addition, extensive work has been published on the plant’s health-promoting activities, ranging from antioxidant activities to the treatment of cancer. Being a rich source of natural liquid wax, the majority of research regarding jojoba focuses on its applications, as well as on the ability to exploit the residual plant materials obtained in its production. To date, several potent phytochemicals have been attributed to its medicinal properties, e.g. simmondsin and phenolic compounds. The current review emphasizes the evidence-based medicinal qualities of the wax and plant extracts and highlights the gaps of knowledge in these research areas and the importance of acquiring additional understanding of jojoba distinctive traits.

scholarly journals Purification, characterization and antioxidant activities in vitro of polysaccharides from Amaranthus hybridus L.

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9077
Author(s):  
Zizhong Tang ◽  
Caixia Zhou ◽  
Yi Cai ◽  
Yujia Tang ◽  
Wenjun Sun ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Structural Characteristics ◽  
Radical Scavenging ◽  
Natural Antioxidants ◽  
Monosaccharide Composition ◽  
In Vitro Test ◽  
Amaranthus Hybridus ◽  
Total Antioxidant

Background Amaranthus hybridus L. is an annual, erect or less commonly ascending herb that is a member of the Amaranthaceae family. Polysaccharides extracted from traditional Chinese medicines may be effective substances with antioxidant activity. Methods In this study, we isolated crude polysaccharides from A. hybridus (AHP-M) using microwave-assisted extraction. Then, the AHP-M was purified by chromatography with DEAE-32 cellulose, and two fractions, AHP-M-1 and AHP-M-2, were obtained. The structural characteristics of AHP-M-1 and AHP-M-2 were investigated, and their antioxidant activities were analyzed in vitro. Results We found that the monosaccharide composition of AHP-M-1 was different from that of AHP-M-2. The molecular weights of AHP-M-1 and AHP-M-2 were 77.625 kDa and 93.325 kDa, respectively. The results showed that the antioxidant activity of AHP-M-2 was better than that of AHP-M-1. For AHP-M-2, the DPPH radical scavenging rate at a concentration of 2 mg/mL was 78.87%, the hydroxyl radical scavenging rate was 39.34%, the superoxide anion radical scavenging rate was 80.2%, and the reduction ability of Fe3+ was approximately 0.90. The total antioxidant capacity per milligram of AHP-M-2 was 6.42, which was higher than that of Vitamin C (Vc). Conclusion The in vitro test indicated that AHP-M-1 and AHP-M-2 have good antioxidant activity, demonstrating that A. hybridus L. polysaccharide has immense potential as a natural antioxidants.

Structural characteristics and anticancer/antioxidant activities of a novel polysaccharide from Trichoderma kanganensis

2019 ◽  
Vol 205 ◽  
pp. 63-71 ◽  
Author(s):  
Yan Lu ◽  
Lei Xu ◽  
Yunzhe Cong ◽  
Ge Song ◽  
Jun Han ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Structural Characteristics

scholarly journals Characterization, Antioxidant and Antitumor Activities of Oligosaccharides Isolated from Evodia lepta (Spreng) Merr. by Different Extraction Methods

Antioxidants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1842
Author(s):  
Feng Xiong ◽  
Hui-Xian Liang ◽  
Zhi-Jing Zhang ◽  
Taifo Mahmud ◽  
Albert S. C. Chan ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Biological Activities ◽  
Structural Characteristics ◽  
Extraction Methods ◽  
Hot Water ◽  
Microwave Assisted Extraction ◽  
Antitumor Activities ◽  
Traditional Chinese Herbal Medicine ◽  
Microwave Assisted ◽  
Assisted Extraction

Evodia lepta (E. lepta) is a traditional Chinese herbal medicine with various biological activities. One of the active components of this widely used medicinal plant is believed to be an oligosaccharide. The extraction yields, structural characteristics, antioxidant, and antitumor activities of four oligosaccharide extracts obtained by hot water extraction (HEO), ultrasound-assisted extraction (UEO), enzyme-assisted (EEO), and microwave-assisted extraction (MEO) were investigated. Matrix-assisted laser desorption/ionization-time of flight-mass spectrometry (MALDI-TOF-MS), X-ray diffraction (XRD), and Scanning electron microscopy (SEM) results indicated that the extraction methods had a difference on the molecular mass distribution, structure, and morphology of the EOs. In addition, HEO and MEO showed strong antioxidant activities, which might be related to their uronic acid and protein contents. More interestingly, MEO was more active toward MDA-MB-231 cells compared to other cells, and cell growth inhibition was proposed to occur through apoptosis. Overall, microwave-assisted extraction is a promising technique for the extraction of high quality EO.

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